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參數(shù)資料
| 型號： | MIC2775-17YM5 |
| 廠商： | MICREL INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | LEAD FREE, SOT-23, 5 PIN |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 333K |
| 代理商： | MIC2775-17YM5 |
June 2009
5
MIC2775
MIC2775
Micrel, Inc.
Functional Diagram
GND
V
DD
/MR
MIC2775
V
REF
RST
R
S
Q
/Q
/RST
Delay
Line
One Shot
V
DD
I
PU
Functional Description
V
DD
Input
The V
DD
pin is both the power supply terminal and a monitored
input voltage. The voltage at this pin is continually compared
against the internal reference. The trip-point at which a reset
occurs is factory programmed. A reset is triggered if and
when V
DD
falls below the trip-point. Hysteresis is employed
to prevent chattering due to noise. The comparator on the
V
DD
input is relatively immune to very brief negative-going
transients.
RST, /RST Reset Outputs
Typically, the MIC2775 is used to monitor the power supply
of intelligent circuits such as microcontrollers and micropro
-
cessors. By connecting the appropriate reset output of a
MIC2775 to the reset input of a μC or μP, the processor will
be properly reset at power-on and during power-down and
brown-out conditions. In addition, asserting /MR, the manual
reset input, will activate the reset function.
The reset outputs are asserted any time /MR is asserted or
if V
DD
drops below the threshold voltage. The reset outputs
remain asserted for t
RST
(min) after V
DD
subsequently returns
above the threshold boundary and/or /MR is released. A reset
pulse is also generated at power-on. Hysteresis is included
in the comparator to prevent chattering of the outputs due
to noise.
/MR, Manual Reset Input
The ability to initiate a reset via external logic or a manual
switch is provided in addition to the MIC2775’s automatic su-
pervisory functions. Driving the /MR input to a logic low causes
an immediate and unconditional reset to occur. Assuming
V
DD
is within tolerance when /MR is released (returns high),
the reset outputs will be de-asserted no less than t
RST
later.
/MR may be driven by a logic signal or mechanical switch.
Typically, a momentary push-button switch is connected
such that /MR is shorted to ground when the switch contacts
close. The switch may be connected directly between /MR
and GND. /MR has an internal 100nA pull-up current to V
DD
and may be left open if unused.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2775-17YM5 TR | 功能描述:監(jiān)控電路 Single Voltage Supervisor with Dual Active-High and Low Push-Pull Outputs, Manual Reset, 1.69V Threshold, 140ms Reset SOT23-5 (Lead Free) RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MIC2775-22BM5 TR | 功能描述:IC SUPERVISOR MICROPOWER SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時:標(biāo)準(zhǔn)傳輸延遲為 60 µs 電壓 - 閥值:3V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:Digi-Reel® 其它名稱:LM8364BALMF30DKR |
| MIC2775-22BM5TR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel 制造商:RF Micro Devices Inc 功能描述: |
| MIC2775-22YM5 TR | 功能描述:監(jiān)控電路 Single Voltage Supervisor with Dual Active-High and Low Push-Pull Outputs, Manual Reset, 2.25V Threshold, 140ms Reset SOT23-5 (Lead Free) RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MIC2775-23BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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